cgroup: factor out cgroupv2_base_path

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

diff --git a/src/PVE/LXC/CGroup.pm b/src/PVE/LXC/CGroup.pm
index 780b0e5f3fc100f82320131ca18171071c2fe2ff..7936576454821815c136589aa10ad3431977dd56 100644 (file)
--- a/src/PVE/LXC/CGroup.pm
+++ b/src/PVE/LXC/CGroup.pm
@@ -110,6 +110,18 @@ sub cgroup_mode() {
     return $CGROUP_MODE;
 }
 
+my $CGROUPV2_PATH = undef;
+sub cgroupv2_base_path() {
+    if (!defined($CGROUPV2_PATH)) {
+       if (cgroup_mode() == 2) {
+           $CGROUPV2_PATH = '/sys/fs/cgroup';
+       } else {
+           $CGROUPV2_PATH = '/sys/fs/cgroup/unified';
+       }
+    }
+    return $CGROUPV2_PATH;
+}
+
 # Find a cgroup controller and return its path and version.
 #
 # LXC initializes the unified hierarchy first, so if a controller is
@@ -122,12 +134,7 @@ sub find_cgroup_controller($) {
     my ($v1, $v2) = get_cgroup_controllers();
 
     if (!defined($controller) || $v2->{$controller}) {
-       my $path;
-       if (cgroup_mode() == 2) {
-           $path = '/sys/fs/cgroup';
-       } else {
-           $path = '/sys/fs/cgroup/unified';
-       }
+       my $path = cgroupv2_base_path();
        return wantarray ? ($path, 2) : $path;
     }